Communication apparatus and communication method

Abstract

A communication apparatus performs packet transmission at the time of detecting an interference signal. Each STA records a pair of a measurement result of an RSSI of an OBSS and a BSS Color, and reports, to an AP, BSS Colors that correspond to a maximum value and a minimum value of the RSSI. The AP generates a database or a table by using a STA having a minimum or maximum RSSI for each of the OBSS's. When a signal of an OBSS is detected, the AP selects a STA that has the smallest RSSI of the OBSS or does not have the largest RSSI of the OBSS, and performs SR transmission.

The invention claimed is: 
     
       1. A communication apparatus, comprising:
 circuitry configured to:
 transmit or receive a signal; 
 obtain first information for each of a plurality of transmission destination candidates, wherein
 the first information is related to an angle of arrival between each of the plurality of transmission destination candidates and an interference source, and 
 the interference source corresponds to an interference signal; and 
 
 select a first transmission destination candidate from the plurality of transmission destination candidates based on the first information, wherein the first information indicates that the first transmission destination candidate is one of most different in the angle of arrival of the interference signal from the interference source or not most similar in the angle of arrival of the interference signal from the interference source. 
 
 
     
     
       2. The communication apparatus according to  claim 1 , wherein
 the circuitry is further configured to identify arrival of the interference signal from an overlapping basic service set (OBSS) based on basic service set (BSS) identification information, and 
 the BSS identification information is in a PHY header of a received frame. 
 
     
     
       3. The communication apparatus according to  claim 2 , wherein the BSS identification information includes a BSS Color defined by IEEE 802.11. 
     
     
       4. The communication apparatus according to  claim 1 , wherein
 the communication apparatus is configured to operate as an access point, 
 the circuitry is further configured to obtain second information for each of the plurality of transmission destination candidates, and 
 the second information is related to:
 each terminal station of a plurality of terminal stations, wherein each terminal station serves as a respective transmission destination candidate of the plurality of the transmission destination candidates in a local basic service set (BSS) and 
 the interference signal received from an overlapping basic service set (OBSS) that serves as the interference source. 
 
 
     
     
       5. The communication apparatus according to  claim 4 , wherein
 the circuitry is further configured to obtain third information for each of the plurality of transmission destination candidates, 
 the third information is related to a reception power of an OBSS signal that serves as the interference signal, 
 the reception power is less than or equal to a threshold, and 
 the circuitry is further configured to:
 select one terminal station of the plurality of terminal stations in the local BSS based on the third information related to the reception power of the OBSS signal, and 
 transmit the signal. 
 
 
     
     
       6. The communication apparatus according to  claim 1 , wherein
 the circuitry is further configured to select a second transmission destination candidate from the plurality of transmission destination candidates based on second information, 
 the second information indicates that a distance of the selected second transmission destination candidate from the interference source is maximum among distances of the plurality of transmission destination candidates from the interference source. 
 
     
     
       7. The communication apparatus according to  claim 1 , wherein
 the circuitry is further configured to obtain second information for each of the plurality of transmission destination candidates, 
 the second information is related to an intensity of a signal of a plurality of signals received from the interference source, 
 the interference source is associated with each of the plurality of transmission destination candidates, 
 the circuitry is further configured to select each of the plurality of transmission destination candidates based on the intensity of the signal received from the interference source, and 
 the signal received from the interference source corresponds to the interference signal. 
 
     
     
       8. The communication apparatus according to  claim 7 , wherein
 the circuitry is further configured to select a second transmission destination candidate from the plurality of the transmission destination candidates based on third information, 
 the third information indicates that an intensity of a specific signal associated with the selected second transmission destination candidate is lowest among intensities of the plurality of signals received from the interference source, 
 the plurality of signals includes the specific signal, and 
 the specific signal is received from the interference source. 
 
     
     
       9. The communication apparatus according to  claim 7 , wherein
 the circuitry is further configured to obtain third information for each of the plurality of transmission destination candidates based on a report related to the intensity of the received signal, and 
 each of the plurality of transmission destination candidates transmits the report. 
 
     
     
       10. The communication apparatus according to  claim 7 , wherein
 the circuitry is further configured to obtain third information based on a report related to a measurement result of the intensity of the received signal, and 
 each of the plurality of transmission destination candidates is configured to transmit the report based on a measurement request from a local station. 
 
     
     
       11. The communication apparatus according to  claim 7 , wherein
 the communication apparatus is configured to operate as an access point, 
 the circuitry is further configured to obtain third information for each of the plurality of transmission destination candidates, 
 the third information is related to the intensity of the received signal in each terminal station of a plurality of terminal stations, 
 the received signal is an overlapping basic service set (OBSS) signal, 
 each terminal station serves as each of the plurality of transmission destination candidates in a local basic service set (BSS), and 
 the circuitry is further configured to manage the third information of each terminal station of the plurality of terminal stations in association with BSS identification information of an OBSS. 
 
     
     
       12. The communication apparatus according to  claim 11 , wherein
 the circuitry is further configured to obtain, from each of the plurality of terminal stations, fourth information that includes the BSS identification information, 
 the BSS identification information indicates one of a first OBSS signal of a plurality of OBSS signals with a first intensity or a second OBSS signal of the plurality of OBSS signals with a second intensity, 
 the first intensity of the first OBSS signal is maximum among intensities of the plurality of OBSS signals, and 
 the second intensity of the second OBSS signal is minimum among the intensities of the plurality of OBSS signals. 
 
     
     
       13. The communication apparatus according to  claim 1 , wherein
 the circuitry includes a directional antenna, 
 the circuitry is further configured to obtain the first information related to the angle of arrival based on a result of a plurality of signals received from the plurality of transmission destination candidates and the interference source, and 
 the first information is obtained by the directional antenna. 
 
     
     
       14. The communication apparatus according to  claim 1 , wherein
 the communication apparatus is configured to operate as an access point, 
 the circuitry is further configured to:
 obtain second information related to an angle of arrival of a plurality of terminal stations serving as the plurality of transmission destination candidates in a local BSS and a plurality of overlapping basic service set (OBSS), 
 group the plurality of terminal stations and an OBSS of the plurality of OBSS that are same in the angle of arrival into a cluster, and 
 manage respective clusters in association with BSS identification information of each of the plurality of OBSS. 
 
 
     
     
       15. A communication method, comprising:
 transmitting or receiving, by circuitry, a signal; 
 obtaining, by the circuitry, information for each of a plurality of transmission destination candidates, wherein
 the information is related to an angle of arrival between each of the plurality of transmission destination candidates and an interference source, and 
 the interference source corresponds to an interference signal; and 
 
 selecting, by the circuitry, a transmission destination candidate from the plurality of transmission destination candidates based on the information, wherein the information indicates that the transmission destination candidate is one of most different in the angle of arrival of the interference signal from the interference source or not most similar in the angle of arrival of the interference signal from the interference source. 
 
     
     
       16. A communication apparatus, comprising:
 a controller configured to control transmission, to an access point, of first information related to an intensity of each of a received plurality of an overlapping basic service set (OBSS) signals, wherein
 the first information includes basic service set (BSS) identification information, 
 the BSS identification information indicates at least one of a first OBSS signal of a plurality of OBSS signals with first intensity or a second OBSS signal of the plurality of OBSS signals with second intensity, 
 the first intensity of the first OBSS signal is maximum among intensities of the plurality of OBSS signals, and 
 the second intensity of the second OBSS signal is minimum among the intensities of the plurality of OBSS signals. 
 
 
     
     
       17. The communication apparatus according to  claim 16 , wherein
 the controller is further configured to control transmission, to the access point, of second information that associates the intensity of each of the received plurality of OBSS signals with basic service set (BSS) identification information of corresponding OBSS. 
 
     
     
       18. A communication apparatus, comprising:
 a controller configured to control transmission, to an access point, of first information related to an intensity of each of a received plurality of an overlapping basic service set (OBSS) signals, wherein 
 the first information includes basic service set (BSS) identification information, 
 the BSS identification information indicated at least one of a first OBSS signal of a plurality of an OBSS signals with first intensity or a second OBSS signal of the plurality of an OBSS signals with second intensity, 
 the first intensity of the first OBSS signal is maximum among intensities of the plurality of OBSS signals, and 
 the second intensity of the second OBSS signal is minimum among the intensities of the plurality of OBSS signals.